Why are Transtock images in RGB format instead of CMYK?
Transtock images are meant to be as versatile as possible for the end user. When an RGB image is converted to CMYK, several parameters must be taken into consideration, including paper stock, four-color film output device, layout software programs used, types of inks used, and special effects intended by you, the designer. We don’t want to make these decisions for you. We would rather you have the control in deciding exactly how your images are converted to CMYK.